I took the index from the words, transformed the number to binary, extra 3 zeros, calculated the sha256 digest, took the first Section of the hexadecimal to convert it to binary, extra 3 zeros into the 8 digits of the binary and got 00000010011 which translates to 19 in decimal. https://macrobookmarks.com/story19168574/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator